1. Newcastle University; Obstetrics and Gynaecology; Newcastle upon Tyne UK NE1 7RU
2. Medical University of Graz; Department of Obstetrics and Gynecology; Universitätsstraße 15 Graz Austria 8010
3. St Marys Hospital, Central Manchester University Hospital NHS Trust; Reproductive Medicine; Manchester UK
4. University of Nottingham; Division of Child Health, Obstetrics and Gynaecology, School of Medicine; Nurture Fertility The East Midlands Fertility Centre Nottingham UK NG10 5QG
5. Newcastle Upon Tyne Hospitals NHS Trust; Newcastle upon Tyne UK NE1 4EP